Apparatus for saturating liquids with gases.



no., 694,08l. Patenteuireb. 25, |902.

J. wels & L. c. AN-nERsoN. APPARATUS FUR SATUBATIN'G LIGUIDS WITH GASES.

(Application tiled Apr'. 5, 1900.)

(No Mael.)

' UNITED STATES PATENT' OFFICE.

JOSEPH B. WEIS AND LOUIS O. ANDERSON, OF FRANKLIN, OHIO.

APPARATUS FOR SATURATING LlQUlDS WITH` GASES.

SPECIFICATIONA forming part of Letters Patent No. 694,081, dated February 25, 1902.

Application led April 5, 190 O.

To all whom it may concern,.-

Be it known that we, JOSEPH B. Wars and LOUIS C. ANDERSON, citizens of the United States, residing at Franklin, in the county of Warren and State of Ohio, have invented a new and useful Improvement in Apparatus for Saturating Liquids with Gases, of which the following is a specification.

The primary object of our invention is to provide an apparatus for economically carrying out the process of producing an aqueous solution of chlorin, which forms the subject of our joint application for Letters Patent, Serial No. 11,587, filed concurrently herewith.

We have devised our improvement more Y.

especially for use in the manufacture of paper for bleaching the stock, although we do not intend to imply that our improvement is limited in its use to the particular bleaching purpose.

Referring to the accompanying drawings, Figure l is an elevation of an apparatus embodying our invention. Fig. 2 is an enlarged broken sectional elevation of the mixer.

The chlorin gas may be produced in any suitable way. We have shown in connection with our apparatus means for producing this gas by electrolysis, in which Ais the cellcomprising the rectangular jar o, which may be formed of glass, as shown, with an outlet-nip ple b, with which is connected a valve-controlled waste-pipe b for drawing od the solution of the caustic-soda by-product, a rectangular frame which may best be formed of slate, having transverseslots at intervals in its top to admit through them the perpendicular plates c c, of carbon or other suitable electrode material, and which are connected together at their outer ends by a metal rod f, as shown, and porous plates g g, preferably of asbestos paper, closing the sides of the frame and held in place by metal (as iron)" plates h, having `numerous longitudinal bars formingopenings. Theforaminoussideplates h are shown beveled along their lower edges, there to engage with lugs j on the base of the jar a, whereby the metal plates are wedged against the porous plates, and they are locked by metal yokes 7c k, connecting the metal plates at the bar extensions Hof their upper ends. r

A suitable generator (indicated at B) is Serial No. 11,586. (No model.)

shown connected from one pole with the rod fand from the other pole with a yoke Z5 at a binding-post thereon.

C is the mixer, comprising a tank o, havinga tubular head p on itsupper end, through which leads the gas-outlet pipe 'n (formed,V

preferably, of lhard rubberorglass) from the decomposing-cell A into the tank beyond a spraying-head q therein, shown as a downwardly-Haring ange r, covered by a numerously-perforated diaphragm s, beyond which the mouth of the pipe n projects a short distance. A valve-controlled supply-pipezf leads into the mixer-head p from a suitable source (not shown) of water, which should be as pure as possible or practicable, and the tank o is preferably connected by a pipe u with areservoir D, which communicates from its base through a pipe o, containing a suitable shutoft' valve w, with the Ordinary washers (not shown) in which the paper-stock is commonly treated in a paper-mill.

The operation is as follows: A soluble chlorid, preferably common salt (NaCl) is introduced in desired quantity into the cell A, to which water is supplied to form the solution. The action of the electric current from the generator B through the positive electrodes c, the electrolyte, and the negative electrodes h decomposes the chlorid of sodium into its elements. The resultant chlorin gas discharges through the pipe n into the mixer O, and the by-product-caustic soda (NaOH) in solution`may be removed from timefto time from the jar a, where it accumulates in the spacebetween its walls and the plates h.

This by-product isvaluable, being readily marketable, and it accordingly reduces the cost of producing the chlorin gas, which we obtain in a condition of absolute purity. This gas in entering the mixer-tank O encounters a finely-divided spray of pure water from the pipe t through the head q and by reason of thisintimate encounter, due tothe close proximity to the head of the discharge end of the gas-pipe, is absorbed by the water, thereby producing an aqueous solution of the gas, which discharges into the reservoir D, from which it maybe drawn oi for use as' needed. Our improved apparatus besides serving to produce a superior quality of bleaching medium performs its work in a peculiarly-eco- IOO nomical manner, inasmuch as the electrodes, which are inexpensive in themselves, are very lasting and because practically all the salt employed is used up, so that no power is lost, as by Waste, in decomposing other substances than the salt itself. In fact,our improvement enables us to produce so economically chlorin gas from common salt, which yields about sixty per cent. in chlorin available for bleaching, that it affords a superior substitute for the ordinary bleach, (hypochlorite of calcium,) which contains only about thirty-three and one-third per cent. of chlorin available for bleaching and tends to contaminate the paper-stock, owing to the impurities Which the bleach contains-namely, calcium chlorid, calcium chlorate, calcium hydrate, and frequently appreciable quantities of carbon.`

Our invention, however, is not restricted to an electrolytic generator for producing the.

supply of chlorin gas, as the gas may be supplied from any suitable source.

W'hat we claim as new, and desire to secure by Letters Patent, is-

l. In an apparatus for saturating liquids with gases, the combination with a gas-supply, a mixer comprising a tank surmounted by a Water-inlet head provided with a watersupplyinlet, a spraying-head in said tank and a gas-conducting pipe leading from the gasdischarge outlet in said supply through said water-inlet head and through said sprayinghead into said tank, substantially as de scribed. I

2. In an apparatus for saturating liquids with gases, the combination with a gas-sup ply, a mixer comprising a tank surmounted by a water-inlet head provided with a Watersupply inlet, a downwardly-iiaring flange in the upper end ot' the tank provided with a numerously-perforated cover, and a gas-conducting pipe leading into the tank from the gas-discharge outlet in said supply through said Water-inlet head and through said cover, substantially as described.

JOSEPH B. WEIS. LOUIS O. ANDERSON. In presence of` P. H. RUE, RALPH B. PARKS. 

